Science Advances

Supplementary Materials

This PDF file includes:

  • Supplementary Text
  • Fig. S1. Bayesian ages of Block A OSL columns.
  • Fig. S2. Regenerative growth curves and plots of De values for six OSL samples.
  • Fig. S3. Preheat dose recovery test for sample BG4066 that was completed for two initial doses of 8 and 31 Gy.
  • Fig. S4. Diagnostic Folsom and Clovis artifacts.
  • Fig. S5. Clovis bifaces.
  • Fig. S6. Pre-Clovis projectile points.
  • Fig. S7. Pre-Clovis bifaces.
  • Fig. S8. Use-wear on pre-Clovis artifacts.
  • Table S1. OSL ages on 4- to 11-μm quartz grains for sediments from the Debra L. Friedkin site, Texas.
  • Table S2. Correlation of OSL ages with archaeological horizons.
  • Table S3. Clovis, Folsom, and Buttermilk Creek Complex bifaces.
  • References (47, 48)

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